A patient asks the nurse why they must have a heparin injection. What is the nurse's best response?

Correct Answer: D

Rationale: The correct answer is D: 'Heparin will prevent new clots from developing.' Heparin is an anticoagulant medication that helps prevent the formation of new blood clots. It does not dissolve existing clots (choice A), reduce platelets (choice B), or necessarily work 'better' than warfarin (choice C) but rather functions differently. The primary action of heparin is to prevent the development of new clots, especially in conditions where clot formation is a concern.

Correct Answer: C

Rationale: The correct answer is 'C: My shoulder and arm are hurting.' Unilateral arm and shoulder pain are classic symptoms of myocardial ischemia, indicating possible heart issues. In this scenario, immediate intervention is required, and the stress test should be halted. Choice A about feeling thirsty does not indicate an acute medical issue. Choice B mentioning heart racing is expected during a stress test. Choice D, a blood pressure reading of 158/80, while slightly elevated, does not present an immediate concern compared to the symptoms of arm and shoulder pain suggesting cardiac distress.

Correct Answer: B

Rationale: Glomerulonephritis refers to a group of kidney disorders characterized by inflammatory injury in the glomerulus. Gross hematuria, resulting in dark, smoky, cola-colored, or brown-colored urine, is a classic symptom of glomerulonephritis. Blood urea nitrogen levels and serum creatinine levels may be elevated, indicating that kidney function is compromised. A mild to moderate elevation in protein in the urine is associated with glomerulonephritis. Hypertension is also common because of fluid volume overload secondary to the kidneys not working properly. Therefore, the parent's statement about noticing cola-colored urine aligns with the expected symptom in glomerulonephritis. The other options are less indicative of glomerulonephritis: choice A indicates normal kidney function, choice C mentions absence of protein in the urine (which is not expected in glomerulonephritis), and choice D talks about low blood pressure (hypertension is more common in glomerulonephritis).

Correct Answer: B

Rationale: An elevated BNP level is indicative of decreased cardiac output, suggesting potential heart failure. In this scenario, the priority action is to check the patient's oxygen saturation. Oxygen saturation assessment is crucial to ensure adequate oxygenation and respiratory function, which is essential in managing cardiac conditions. Calling for a cardiac evaluation and implementing appropriate measures may be necessary but is not the immediate priority without assessing oxygen saturation. Informing the physician about the elevated BNP level can be important for further management but is not the immediate action needed in this situation. Encouraging the patient to limit physical activity might be a consideration later but is not the priority action when dealing with a potential cardiac emergency.

Correct Answer: B

Rationale: After a coronary angiogram, patients need to maintain bed rest and keep the head of the bed at no more than 30 degrees for 3-6 hours, depending on the insertion site. Elevating the head of the bed to 60 degrees for a meal could increase the risk of bleeding or complications at the insertion site. Refilling the ice pack placed on the insertion site is appropriate for managing potential swelling or discomfort. Filling the patient's pitcher with ice-cold drinking water is a standard care task. Placing an extra pillow under the patient's head upon request is a comfort measure and does not pose a risk to the patient's recovery.